[iOS] Building AtomSampleViewer.GameLauncher from the Xcode solution fails

[LB-KacperKapusta]

Describe the bug Building AtomSampleViewer.GameLauncher using Xcode fails displaying the following warnings and errors:

Object file (/Users/macpro13/.o3de/3rdParty/packages/lz4-1.9.3-vcpkg-rev4-ios/lz4/lz4/lib/liblz4.a(lz4.c.o)) was built for newer iOS version (14.5) than being linked (14.0)
Object file (/Users/macpro13/.o3de/3rdParty/packages/lz4-1.9.3-vcpkg-rev4-ios/lz4/lz4/lib/liblz4.a(lz4frame.c.o)) was built for newer iOS version (14.5) than being linked (14.0)
Object file (/Users/macpro13/.o3de/3rdParty/packages/lz4-1.9.3-vcpkg-rev4-ios/lz4/lz4/lib/liblz4.a(lz4hc.c.o)) was built for newer iOS version (14.5) than being linked (14.0)
Object file (/Users/macpro13/.o3de/3rdParty/packages/lz4-1.9.3-vcpkg-rev4-ios/lz4/lz4/lib/liblz4.a(xxhash.c.o)) was built for newer iOS version (14.5) than being linked (14.0)
Undefined symbol symbol: _png_do_expand_palette_rgba8_neon
Undefined symbol symbol: _png_do_expand_palette_rgb8_neon
Undefined symbol symbol: _png_riffle_palette_neon
Undefined symbol symbol: _png_init_filter_functions_neon

Please note that changing the iOS version to the 14.5 mentioned by the warnings (or any other version) results in another error being thrown: overriding '-miphoneos-version-min=14.0' option with '-target arm64-apple-ios14.5'

Please refer to the attached screenshots for more information.

Prerequisites

• AtomSampleViewer project has been built for MacOS using source engine.
• All iOS assets have been processed.

Steps to reproduce

1. Run the iOS project generation command from the project root directory: cmake -B build/ios -S . -G Xcode -DCMAKE_TOOLCHAIN_FILE=<path_to_source_engine>/cmake/Platform/ iOS/Toolchain_ios.cmake -DLY_MONOLITHIC_GAME=1
2. Open the XCode project at build/ios/<Project_Name>.xcodeproj.
3. Set the build configuration to Profile.
4. Change the GPU Frame Capture to disabled and uncheck the Metal API Validation.
5. Build the AtomSampleViewer.GameLauncher.

Expected behavior Build is successful and the GameLauncher is deployed to a device.

Actual behavior Build fails.

Screenshots/Video 14.0 iOS version (default): 14.5 iOS version (changed):

Found in Branch ASV: Stabilization/2205(bcaac3e) O3DE: Stabilization/2205(968ce59)

Desktop/Device

Device: iPad Pro 11-inch (3rd Generation)

• OS: iPadOS
• Version: 15.3.1
• CPU: Apple M1 Octa-core
• GPU: Apple GPU (8-core graphics)
• Memory: 8GB

Device: MacBook Pro

• OS: macOS
• Version: Big Sur 11.3.1
• CPU: Intel Core i5 2.0GHz Quad-Core
• GPU: Intel Iris Plus Graphics 1536 MB
• Memory: 16GB